Berkelium #97 Bk
Berkelium.jpg

Berkelium was discovered in December of 1949 at the University of California. It was discovered by Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street Jr., and Albert Ghirso. It's named after the city it was discovered in, Berkeley, California.

Berkelium is not found anywhere except in nuclear facilities and nuclear research facilities. It is not used in anything except for scientific research. It is highly radioactive. Only 0.66 grams of Berkelium were produced in the US from 1967-1983.

Number of electrons: 97
Number of protons: 97
Number of neutrons: 150
Melting point: 1050°C 
Boiling point: unknown
Density: 14g/cm3
Symbol: Bk
Atomic Mass: 247 AMU's
(AMU=Atomic Mass Unit)

SOURCES:

http://www.niiar.ru/?q=resourse_base

http://education.jlab.org/itselemental/ele097.html
http://periodic.lanl.gov/elements/97.html
www.chlive.org/dnemerofsky/elements/Bk/Berkelium.htm
http://environmentalchemistry.com/yogi/periodic/Bk.html